/usr/include/stk/BandedWG.h is in libstk0-dev 4.4.4-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | #ifndef STK_BANDEDWG_H
#define STK_BANDEDWG_H
#include "Instrmnt.h"
#include "DelayL.h"
#include "BowTable.h"
#include "ADSR.h"
#include "BiQuad.h"
namespace stk {
/***************************************************/
/*! \class BandedWG
\brief Banded waveguide modeling class.
This class uses banded waveguide techniques to
model a variety of sounds, including bowed
bars, glasses, and bowls. For more
information, see Essl, G. and Cook, P. "Banded
Waveguides: Towards Physical Modelling of Bar
Percussion Instruments", Proceedings of the
1999 International Computer Music Conference.
Control Change Numbers:
- Bow Pressure = 2
- Bow Motion = 4
- Strike Position = 8 (not implemented)
- Vibrato Frequency = 11
- Gain = 1
- Bow Velocity = 128
- Set Striking = 64
- Instrument Presets = 16
- Uniform Bar = 0
- Tuned Bar = 1
- Glass Harmonica = 2
- Tibetan Bowl = 3
by Georg Essl, 1999 - 2004.
Modified for STK 4.0 by Gary Scavone.
*/
/***************************************************/
const int MAX_BANDED_MODES = 20;
class BandedWG : public Instrmnt
{
public:
//! Class constructor.
BandedWG( void );
//! Class destructor.
~BandedWG( void );
//! Reset and clear all internal state.
void clear( void );
//! Set strike position (0.0 - 1.0).
void setStrikePosition( StkFloat position );
//! Select a preset.
void setPreset( int preset );
//! Set instrument parameters for a particular frequency.
void setFrequency( StkFloat frequency );
//! Apply bow velocity/pressure to instrument with given amplitude and rate of increase.
void startBowing( StkFloat amplitude, StkFloat rate );
//! Decrease bow velocity/breath pressure with given rate of decrease.
void stopBowing( StkFloat rate );
//! Pluck the instrument with given amplitude.
void pluck( StkFloat amp );
//! Start a note with the given frequency and amplitude.
void noteOn( StkFloat frequency, StkFloat amplitude );
//! Stop a note with the given amplitude (speed of decay).
void noteOff( StkFloat amplitude );
//! Perform the control change specified by \e number and \e value (0.0 - 128.0).
void controlChange( int number, StkFloat value );
//! Compute and return one output sample.
StkFloat tick( unsigned int channel = 0 );
//! Fill a channel of the StkFrames object with computed outputs.
/*!
The \c channel argument must be less than the number of
channels in the StkFrames argument (the first channel is specified
by 0). However, range checking is only performed if _STK_DEBUG_
is defined during compilation, in which case an out-of-range value
will trigger an StkError exception.
*/
StkFrames& tick( StkFrames& frames, unsigned int channel = 0 );
protected:
bool doPluck_;
bool trackVelocity_;
int nModes_;
int presetModes_;
BowTable bowTable_;
ADSR adsr_;
BiQuad bandpass_[MAX_BANDED_MODES];
DelayL delay_[MAX_BANDED_MODES];
StkFloat maxVelocity_;
StkFloat modes_[MAX_BANDED_MODES];
StkFloat frequency_;
StkFloat baseGain_;
StkFloat gains_[MAX_BANDED_MODES];
StkFloat basegains_[MAX_BANDED_MODES];
StkFloat excitation_[MAX_BANDED_MODES];
StkFloat integrationConstant_;
StkFloat velocityInput_;
StkFloat bowVelocity_;
StkFloat bowTarget_;
StkFloat bowPosition_;
StkFloat strikeAmp_;
int strikePosition_;
};
inline StkFrames& BandedWG :: tick( StkFrames& frames, unsigned int channel )
{
unsigned int nChannels = lastFrame_.channels();
#if defined(_STK_DEBUG_)
if ( channel > frames.channels() - nChannels ) {
oStream_ << "BandedWG::tick(): channel and StkFrames arguments are incompatible!";
handleError( StkError::FUNCTION_ARGUMENT );
}
#endif
StkFloat *samples = &frames[channel];
unsigned int j, hop = frames.channels() - nChannels;
if ( nChannels == 1 ) {
for ( unsigned int i=0; i<frames.frames(); i++, samples += hop )
*samples++ = tick();
}
else {
for ( unsigned int i=0; i<frames.frames(); i++, samples += hop ) {
*samples++ = tick();
for ( j=1; j<nChannels; j++ )
*samples++ = lastFrame_[j];
}
}
return frames;
}
} // stk namespace
#endif
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